Five-fold reduction of lasing threshold near the first Γl-pseudogap of ZnO inverse opals

Michael Scharrer, Heeso Noh, Xiaohua Wu, Mark A. Anderson, Alexey Yamilov, Hui Cao, Robert P. H. Chang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report room temperature lasing in ZnO inverse opal photonic crystals in the near-ultraviolet (UV) frequency range. We observe random lasing due to disorder in the structures when the photonic pseudogaps are located away from the ZnO gain spectrum. Tuning the first ΓL-pseudogap to the gain peak leads to a five-fold reduction in lasing threshold and a frequency shift of the lasing modes due to the enhanced confinement of light.

Original languageEnglish
Article number024007
JournalJournal of Optics A: Pure and Applied Optics
Volume12
Issue number2
DOIs
Publication statusPublished - 2010

Fingerprint

Photonic crystals
Photonics
lasing
Tuning
thresholds
photonics
Temperature
frequency shift
frequency ranges
tuning
disorders
room temperature
crystals

Keywords

  • 3D photonic crystals
  • Opal
  • Random laser
  • ZnO

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

Cite this

Five-fold reduction of lasing threshold near the first Γl-pseudogap of ZnO inverse opals. / Scharrer, Michael; Noh, Heeso; Wu, Xiaohua; Anderson, Mark A.; Yamilov, Alexey; Cao, Hui; Chang, Robert P. H.

In: Journal of Optics A: Pure and Applied Optics, Vol. 12, No. 2, 024007, 2010.

Research output: Contribution to journalArticle

Scharrer, Michael ; Noh, Heeso ; Wu, Xiaohua ; Anderson, Mark A. ; Yamilov, Alexey ; Cao, Hui ; Chang, Robert P. H. / Five-fold reduction of lasing threshold near the first Γl-pseudogap of ZnO inverse opals. In: Journal of Optics A: Pure and Applied Optics. 2010 ; Vol. 12, No. 2.
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AU - Cao, Hui

AU - Chang, Robert P. H.

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